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Method Reference - Reference to a Constructor example.
This page shows a simple example of Method Reference feature of reference to a construtor:
package com.java2novice.methodreference;
import com.java2novice.lambda.Employee;
public class ConstructorRefEx {
public static void main(String a[]) {
EmployeeFactory empFactory = Employee::new;
Employee emp = empFactory.getEmployee("Nataraja G", "Accounts", 8000);
System.out.println(emp);
}
}
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Here is EmployeeFactory class:
package com.java2novice.methodreference;
import com.java2novice.lambda.Employee;
public interface EmployeeFactory {
public abstract Employee getEmployee(String name, String account, Integer salary);
}
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Here is Employee POJO class:
package com.java2novice.lambda;
public class Employee {
private String name;
private String account;
private Integer salary;
public Employee(String name, String account, Integer salary) {
super();
this.name = name;
this.account = account;
this.salary = salary;
}
@Override
public String toString() {
return "name: "+ this.name +" | account: "+ this.account +" | salary: "+this.salary;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAccount() {
return account;
}
public void setAccount(String account) {
this.account = account;
}
public Integer getSalary() {
return salary;
}
public void setSalary(Integer salary) {
this.salary = salary;
}
}
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| Output: |
name: Nataraja G | account: Accounts | salary: 8000
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Java-8 Method References Examples
- Method Reference - Reference to a Static Method example.
- Method Reference - Reference to a Instance Method example.
- Method Reference - Reference to a Constructor example.
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Transient and Volatile Modifiers
Transient: The transient modifier applies to variables only and it is not stored as part of its object's Persistent state.
Transient variables are not serialized.
Volatile: Volatile modifier applies to variables only and it tells the compiler that the variable modified by volatile can
be changed unexpectedly by other parts of the program.
You can never get enough of what you don’t really need.
-- Eric Hoffer
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